/* header、body 设置 */
html {
    font-family: 'Noto Sans SC', sans-serif;
    background: url(images/pattern.png);
  }
  body {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    background-color: white;
    position: relative;
  }
  
  /* 标题样式 */
  header {
    height: 150px;
  }
  header img {
    width: 100px;
    position: absolute;
    right: 32.5px;
    top: 32.5px;
  }
  h1 {
    font-size: 50px;
    line-height: 140px;
    margin: 0 0 0 32.5px;
  }
  
  /* 主体区段和视频样式 */
  main {
    background: #ccc;
  }
  article {
    padding: 20px;
  }
  h2 {
    margin-top: 0;
  }
  p {
    line-height: 2;
  }
  iframe {
    float: left;
    margin: 0 20px 20px 0;
  
    max-width: 100%;
  }
  
  /* 更多信息链接 */
  .further-info {
    clear: left;
    padding: 40px 0;
    background: #c13832;
    box-shadow: inset 0 3px 2px rgba(0,0,0,0.5),
                inset 0 -3px 2px rgba(0,0,0,0.5);
  }
  .further-info a {
    width: 25%;
    display: block;
    float: left;
  }
  .further-info img {
    max-width: 100%;
  }
  .clearfix {
    clear: both;
  }
  
  /* 小熊猫图片 */
  .red-panda img {
    display: block;
    max-width: 100%;
  }